Tagged Questions
2
votes
1answer
51 views
What lossy audio formats are more (or less) “efficient”? [closed]
This question is related to the answers I got to this question.
The bitrate-efficient format (see the question's most voted answers and their comments thereunder) would be one that assures a good ...
2
votes
1answer
62 views
What does the “cutoff” option do in FFmpeg?
I am encoding some FLAC files into AAC and I came across the
-cutoff option.
I do not see this option in the documentation, however I did find it in the help
$ ffmpeg -v warning -h full | grep ...
0
votes
1answer
151 views
Converting MP3 to AAC and outputting to stdout
ffmpeg.exe -i s.mp3 -f aac -
This is the command I run but it doesn't recognize the format AAC.
Requested output format 'aac' is not a suitable output format pipe::
Invalid argument
However when ...
0
votes
1answer
109 views
How to determine AAC bit depth
With a wav file for example you can easily distinguish between bit depths
24-bit
Stream #0:0: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 44100 Hz, stereo,
s32, 2116 kb/s
16-bit
...
0
votes
1answer
155 views
AAC converted from MP3 (FFmpeg) results in bigger size
I'm on Windows x64 converting MP3 file to AAC using FFmpeg.
I tried these commands:
ffmpeg -i file.mp3 -acodec aac -strict -2 file.aac
ffmpeg -i file.mp3 -c:a libvo_aacenc file.aac
Both commands ...
1
vote
0answers
524 views
Failed to convert a wmv file to mp4 with ffmpeg
i need a help with this command
FFMPEG COMMAND:
ffmpeg -y -i /input.wmv -vcodec libx264 -acodec libfaac -ac 2 -bufsize 20M -sameq -f mp4 /output.mp4
Output:
ffmpeg version 1.0 Copyright (c) ...
1
vote
2answers
4k views
Convert MKV with DTS sound to MP4 video with AAC or AC3 audio
I've got a 4.3 GB 720p movie and want to convert this MKV with DTS sound to MP4 video with AAC or AC3 audio.
I sometimes got "ffmpeg: unrecognized option '-c:v'" and "aac unrecognized" and other ...
1
vote
2answers
5k views
HLS video segmenting complications. How to create a transport stream with ffmpeg
I have h264 videos, and currently we're using Apple's HTTP Video Streaming tools and mediafilesegmenter to segment these files.
What I need to do is to switch to alternative segmenter based on this ...
0
votes
1answer
77 views
Undefined reference to _aacplusEncOpen
Following is the copy of my config.log file->
http://pastebin.com/embed_js.php?i=UyTBTTZv
Following is copy of configure file->
http://pastebin.com/embed_js.php?i=2c15zppN
Additionally: As of now ...
3
votes
1answer
6k views
FFmpeg command to convert MP3 to AAC
I can issue this command:
ffmpeg -i input.mp3 -acodec alac -ab 128k -ar 48000 -ac 2 -y output.m4a
to create a m4a file.
But when I issue this command
ffmpeg -i input.mp3 -acodec alac -ab 128k ...
2
votes
1answer
289 views
Time of splitting and encoding video with ffmpeg increases exponentially
I'm trying to split a video by subtitles and encode into .mp4(h.264/aac) using ffmpeg, but it takes so much time! First pieces of video are splited and encoded really fast, but for each iteration time ...
1
vote
1answer
319 views
Small pieces of video split by ffmpeg are not playing or playing with artifacts
I'm trying to cut a video file into small parts (0.5-5s) and encode these parts to h.264/aac with ffmpeg. I'm using this command:
ffmpeg -i 1.avi -ss 00:05:00 -t 00:00:01,50 -vcodec libx264 -threads ...
6
votes
2answers
6k views
How to use ffmpeg to add metadata to an AAC file without reencoding?
I'm using ffmpeg to extract just the audio stream from a video file:
ffmpeg -i video.mp4 -vn -acodec copy audio.aac
This produces a clean audio file but without any metadata.
To add metadata, ...
0
votes
1answer
354 views
FFMPEG: how to add watermark to video?
My Platform: Ubuntu 10.10 + FFMPEG 0.5.3(I installed ffmpeg from source)
I try to add Watermark to a .MOV video with FFMPEG 0.5.3 imlib2.so (Please note FFMPEG 0.6+ dont support imlib2.so, so I use ...
1
vote
1answer
3k views
FFMPEG: AC3 to AAC conversion issues
Ok, this one has me scratching my head - and being a n00b isn't helping.
In short, I had a script which I had perfected to covert MKV video to MP4.
However, my Ubuntu 10.10 box bit the dust and ...
2
votes
0answers
2k views
How to convert a mpeg4-aac video to mpeg-ts using MEncoder?
I know this can be done using FFMpeg and I have done it. The only problem here was that FFMpeg actually tries to "encode" the file while converting to mpeg-ts which I don't want.
i.e. I just want to ...
